Mike,
After a quick test, I am puzzled: running "backend_driver.py Template"
takes 0.49 minutes on my machine before and after this change, so the dedenting time must have been less than I thought.
Eric
mdboom@...189... wrote:
···
Revision: 3744
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=3744&view=rev
Author: mdboom
Date: 2007-08-28 12:17:21 -0700 (Tue, 28 Aug 2007)
Log Message:
-----------
Use regular expressions to do dedenting. This is ~15X faster than the
old implementation. dedent accounted for around 30% of the time spent
in "import pylab", so was probably worthy of optimization, even if this
regex approach is less clear. The results are identical to the old
implementation, with the exception of a single docstring (in
backend_bases.py) that needed to be fixed.
Perhaps the difference is below the noise floor? I was focusing only on startup time by running lsprofcalltree over a script containing only "import pylab". In that context, dedent was the largest contributor to startup time (other than stuff in the stdlib and numpy) before this change. But I would imagine that that over the total time of backend_driver.py and actually doing stuff like, say, *plotting* is fairly insignificant.
Cheers,
Mike
Eric Firing wrote:
···
Mike,
After a quick test, I am puzzled: running "backend_driver.py Template"
takes 0.49 minutes on my machine before and after this change, so the dedenting time must have been less than I thought.
Eric
mdboom@...189... wrote:
Revision: 3744
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=3744&view=rev
Author: mdboom
Date: 2007-08-28 12:17:21 -0700 (Tue, 28 Aug 2007)
Log Message:
-----------
Use regular expressions to do dedenting. This is ~15X faster than the
old implementation. dedent accounted for around 30% of the time spent
in "import pylab", so was probably worthy of optimization, even if this
regex approach is less clear. The results are identical to the old
implementation, with the exception of a single docstring (in
backend_bases.py) that needed to be fixed.
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